摘要
星载GPS不同于地基GPS。为了进行基于星载GPS的低轨卫星精密定轨和地球重力场模型解算,本文研究了星载GPS观测数据的钟差改正、整周模糊度解算、周跳探测、卫星跟踪点改正、GPS天线相位中心偏移和改正等的模型,给出了对应的处理公式和处理过程。
GPS onboard satellite is different from ground-based GPS.In order to precisely determine the orbit of low-orbit satellite and solve the earth's gravity filed model,the preprocessing models of GPS data onboard satellite are studied in the paper.The preprocessing models include the clock error correction,integer ambiguity solution,cycle-slip detection,correction of satellite tracking point,bias and correction of GPS antenna phase center.Finally,the formula and procedure to process GPS data onboard satellite is given.
出处
《测绘科学》
CSCD
北大核心
2006年第3期62-64,共3页
Science of Surveying and Mapping
基金
山东省自然科学基金(Y2003E01)
江苏省高校自然科学基金(05KJB170129)
基础地理信息与数字化技术山东省重点实验室开放研究基金(SD2003-4)
关键词
星载GPS数据
钟差改正
模糊度
跟踪点改正
GPS data onboard satellite
clock error correction
ambiguity
tracking point correction
